CSDS independent

The CSDS should not depend on SWIFT, but the other way around. Here, I am making the final step in order to make sure that it is the case. The CSDS is now producing two libraries. The usual one for the reader and one for the writer. There is also one header just for the writer csds/src/csds_logfile_writer.h.

I have moved dump.h and dump.c into CSDS' repository and renamed them csds_logfile_writer. Most of the lines removed here are just moved into my repository.

For the tests, I decided to keep them here as they ensure that the CSDS works correctly within SWIFT.